Many production cast iron and aluminum blocks suffer from a design weakness of cylinder stability...

Many production cast iron and aluminum blocks suffer from a design weakness of cylinder stability by nature of poor support at the upper deck area. The manufacturing process of "cast in sleeves" provides for economy of scale in low horsepower engines, but does not accommodate high horsepower, high boost, or larger bore sizes. Darton has engineered a superior patented solution by using a unique designed cylinder sleeve which when siamesed and nested, creates a solid deck of sleeve flanges held...

ACL RACE rod bearings have been the standard in the import world for many years. Xenocron tuning ...

ACL RACE rod bearings have been the standard in the import world for many years. Xenocron tuning is happy to have a good amount of ACL bearings on hand, but feel free to contact us to check our stock as these bearings go fast...
This item is a set of STANDARD SIZE rod bearings only, main bearings and thrust washers are available separately.
If you need bearings for any other applications feel free to contact us.
Available HONDA/ACURA part numbers:
4B1946H - B16A2, B17A1, B18A1/B18B24B1925H -...

Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the...

Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear.
Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, whic...

As you may already know, there are many problems associated with the stock timing chain tensioner...

As you may already know, there are many problems associated with the stock timing chain tensioner.Here are some of the most common problemsthat develop with the stock unit:1) The timing chain stretches and the guides wear over time creating excessive slack in the overall assembly.2) When throttle is lifted after a high rpm pull, the sudden change in momentum causes excessive slack in the timing chain. This also causes a sudden change in oil pressure in the stock tensioner.3) Sudden downshifts...